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Government Regulation and Structural Change in the Corporate Acquisitions Market: The Impact of the Williams Act

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  • Malatesta, Paul H.
  • Thompson, Rex

Abstract

This paper presents evidence on how the Williams Act affected the corporate acquisitions market. The acquisition process is modeled and three hypotheses about the Act's effects are discussed. These hypotheses imply differing restrictions on how the Act changes the model's parameters. Parameter changes are estimated but we are unable to reliably discriminate between two of the three hypotheses using the classical statistical testing approach, though the third hypothesis is reliably rejected. Bayesian analysis using a diffuse prior is employed to make formal probability comparisons among the hypotheses. The most probable hypothesis, according to the results, implies that the Williams Act reduced the expected gross present value of acquisition attempts.

Suggested Citation

  • Malatesta, Paul H. & Thompson, Rex, 1993. "Government Regulation and Structural Change in the Corporate Acquisitions Market: The Impact of the Williams Act," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 28(3), pages 363-379, September.
    • Handle: RePEc:cup:jfinqa:v:28:y:1993:i:03:p:363-379_00
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    Cited by:

    1. Boardman, Anthony & Vertinsky, Ilan & Whistler, Diana, 1997. "Using information diffusion models to estimate the impacts of regulatory events on publicly traded firms," Journal of Public Economics, Elsevier, vol. 63(2), pages 283-300, January.
    2. Francisco Barillas & Jay Shanken, 2018. "Comparing Asset Pricing Models," Journal of Finance, American Finance Association, vol. 73(2), pages 715-754, April.
    3. Wang, Ying & Lahr, Henry, 2017. "Takeover law to protect shareholders: Increasing efficiency or merely redistributing gains?," Journal of Corporate Finance, Elsevier, vol. 43(C), pages 288-315.
    4. Dissanaike, Gishan & Drobetz, Wolfgang & Momtaz, Paul P. & Rocholl, Jörg, 2021. "The Economics of Law Enforcement: Quasi-Experimental Evidence from Corporate Takeover Law," Journal of Corporate Finance, Elsevier, vol. 67(C).
    5. Yang Zhang, 2018. "Corporate Governance Effects on Risk Management and Shareholder Wealth: The Case of Mergers and Acquisitions," PhD Thesis, Finance Discipline Group, UTS Business School, University of Technology, Sydney, number 4-2018.
    6. Anthony Boardman & Z. Stuart Liu & Marshall Sarnat & Ilan Vertinsky, 1998. "The effectiveness of tightening illegal insider trading regulation: the case of corporate takeovers," Applied Financial Economics, Taylor & Francis Journals, vol. 8(5), pages 519-531.

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